Laboratory selection, cross‐resistance, and estimations of realized heritability of indoxacarb resistance in Phenacoccus solenopsis (Homoptera: Pseudococcidae)

2019 ◽  
Vol 76 (1) ◽  
pp. 161-168 ◽  
Author(s):  
Muhammad BS Afzal ◽  
Sarfraz A Shad ◽  
Masood Ejaz ◽  
Jose E Serrao
Keyword(s):  
Cross Resistance ◽  
Realized Heritability ◽  
Phenacoccus Solenopsis ◽  
Laboratory Selection

Risk Assessment of Flonicamid Resistance in Musca domestica (Diptera: Muscidae): Resistance Monitoring, Inheritance, and Cross-Resistance Potential

2021 ◽  
Author(s):  
Naeem Abbas ◽  
Muhammad Abubakar ◽  
Muhammad Waqar Hassan ◽  
Sarfraz Ali Shad ◽  
Abdulwahab M Hafez
Keyword(s):  
Risk Assessment ◽  
Musca Domestica ◽  
Insect Pests ◽  
Fold Increase ◽  
House Fly ◽  
Cross Resistance ◽  
Realized Heritability ◽  
Inheritance Pattern ◽  
Systemic Insecticide ◽  
Laboratory Selection

Abstract Flonicamid is a chordotonal modulator and novel systemic insecticide that has been used frequently for controlling a broad range of insect pests. The risk of flonicamid resistance was assessed through laboratory selection and determining inheritance pattern and cross-resistance potential to five insecticides in house fly, Musca domestica L. Very low to high flonicamid resistance in M. domestica populations was found compared with the susceptible strain (SS). A flonicamid-selected (Flonica-RS) M. domestica strain developed 57.73-fold resistance to flonicamid screened for 20 generations compared with the SS. Overlapping 95% fiducial limits of LC50 of the F1 and F1ǂ, and dominance values (0.87 for F1 and 0.92 for F1ǂ) revealed an autosomal and incomplete dominant flonicamid resistance. The monogenic model of resistance inheritance suggested a polygenic flonicamid resistance. The Flonica-RS strain displayed negative cross-resistance between flonicamid and sulfoxaflor (0.10-fold) or clothianidin (0.50-fold), and very low cross-resistance between flonicamid and flubendiamide (4.71-fold), spinetoram (4.68-fold), or thiamethoxam (2.02-fold) in comparison with the field population. The estimated realized heritability (h2) value of flonicamid resistance was 0.02. With selection mortality 40–90%, the generations required for a 10-fold increase in LC50 of flonicamid were 94–258 at h2 (0.02) and slope (3.29). Flonicamid resistance was inherited as autosomal, incomplete dominant, and polygenic in the Flonica-RS. Negative or very low cross-resistance between flonicamid and sulfoxaflor, clothianidin, flubendiamide, spinetoram, and thiamethoxam means that these insecticides can be used as alternatives for controlling M. domestica. These data can be useful in devising the management for M. domestica.

scholarly journals Evolution of Asian Corn Borer Resistance to Bt Toxins Used Singly or in Pairs

Toxins ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 461 ◽  
Author(s):  
Yueqin Wang ◽  
Yudong Quan ◽  
Jing Yang ◽  
Changlong Shu ◽  
Zhenying Wang ◽  
...  
Keyword(s):  
Transgenic Crops ◽  
Model System ◽  
Cross Resistance ◽  
Ostrinia Furnacalis ◽  
Worst Case ◽  
Corn Borer ◽  
Laboratory Selection ◽  
Bt Toxins ◽  
Asian Corn Borer ◽  
Evolution Of Resistance

Transgenic crops producing insecticidal proteins from Bacillus thuringiensis (Bt) have revolutionized pest control, but the benefits of this approach have been reduced by the evolution of resistance in pests. The widely adopted ’pyramid strategy’ for delaying resistance entails transgenic crops producing two or more distinct toxins that kill the same pest. The limited experimental evidence supporting this strategy comes primarily from a model system under ideal conditions. Here we tested the pyramid strategy under nearly worst-case conditions, including some cross-resistance between the toxins in the pyramid. In a laboratory selection experiment with an artificial diet, we used Bt toxins Cry1Ab, Cry1F, and Cry1Ie singly or in pairs against Ostrinia furnacalis, one of the most destructive pests of corn in Asia. Under the conditions evaluated, pairs of toxins did not consistently delay the evolution of resistance relative to single toxins.

Resistance of green lacewing, Chrysoperla carnea Stephens to nitenpyram: Cross-resistance patterns, mechanism, stability, and realized heritability

2017 ◽  
Vol 135 ◽  
pp. 59-63 ◽  
Author(s):  
Muhammad Mudassir Mansoor ◽  
Abu Bakar Muhammad Raza ◽  
Naeem Abbas ◽  
Muhammad Anjum Aqueel ◽  
Muhammad Afzal
Keyword(s):  
Cross Resistance ◽  
Chrysoperla Carnea ◽  
Realized Heritability ◽  
Green Lacewing ◽  
Resistance Patterns

The mechanisms of organophosphate and carbamate resistance in Culex quinquefasciatus (Diptera: Culicidae) from Cuba

1990 ◽  
Vol 80 (3) ◽  
pp. 245-250 ◽  
Author(s):  
J.A. Bisset ◽  
M.M. Rodriguez ◽  
C. Diaz ◽  
E. Ortiz ◽  
M.C. Marquetti ◽  
...  
Keyword(s):  
Culex Quinquefasciatus ◽  
Cross Resistance ◽  
Standard Laboratory ◽  
Biochemical Tests ◽  
Low Level ◽  
Laboratory Selection ◽  
Resistance Spectrum ◽  
Havana City ◽  
Level Resistance ◽  
Selection Of

AbstractTwo field-collected strains of Culex quinquefasciatus Say, collected 50 km apart in Havana City, Cuba, were both resistant to malathion and propoxur, while one population also showed low level resistance to temephos. Laboratory selection of the latter population with malathion for 22 generations increased the malathion resistance 1050-fold, temephos resistance 24-fold and propoxur resistance 453-fold compared to the standard laboratory susceptible strain. Synergist studies and biochemical tests indicated that two mechanisms, an elevated esterase and an insensitive acetylcholinesterase, were operative in these strains. The esterase mechanism conferred resistance to malathion, but not to temephos or propoxur. The acetylcholinesterase mechanism increased the level of malathion resistance and extended the cross-resistance spectrum to temephos and propoxur.

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